If your looking for a good alum. head out of the box I Highly recommend the AFRs. If your looking to go bigger down the road & wanna do a lot of porting I suggest the Brodix. You will love having a set of alum heads, you will be able to tell a considerable difference. You mat also want to talk to an experienced BOAT motor builder, a good combo (heads, cam, rockers, intake, etc.etc.) is always better than just going BIG.